通过浸渍等方法制得改性石墨材料,提高了复合材料的可逆嵌锂客量,改善了其大电流性能及循环使用寿命。应用电子扫描显微镜(SEM)及恒电流充放电技术研究改性石墨材料的表面物理形态及在不同电流密度下的充放电性能特征,认为改性后的石墨更加适合作为石墨/炭非对称电化学电客的负极材料。
Some modifications are carried out to improve the performance of natural graphite. The results show that it could increase the reversible capacity and cycling performance in high rate condition. The surface morphology and charge/discharge properties of the modified graphite are investigated by means of SEM and constant current charge/discharge technology. Modified graphite is more suitable for grahite/C asymmetric electrochemical capacitor as anode material.